## Abstract In __Polyodon spathula__, the pectoral fin radials, with the exception of the metapterygium, are derived from the decomposition of a single continuous cartilage fin plate that is continuous with the scapulocoracoid. This cartilage sheet develops two interior splits to form three precurs
The olfactory bulbar formation and related nuclei of the paddlefish (Polyodon spathula)
β Scribed by Robert H. Story
- Publisher
- John Wiley and Sons
- Year
- 1964
- Tongue
- English
- Weight
- 818 KB
- Volume
- 123
- Category
- Article
- ISSN
- 0021-9967
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## Abstract Retinal wholeβmount preparations from the eyes of the North American paddlefish, __Polyodon spathula__, were examined with a combination of bright field and differential interference contrast microscopy. The entire retina was mapped and population counts of rod and cone photoreceptors w
Juvenile paddlefish (Polyodon spathula) hatched in 1988 have been cultivated in ponds up to sexual maturity (age 11+) in Moldavia, located in central European Plain with an altitude ranging from 429.5 m to 147 m. The average annual air temperature is 9.5-10 Β°C and the growing season for pond fish is